QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

3 km SSE of La Parguera, Puerto Rico

· 6.0 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 3 kmGuánica Municipio 12 kmCabo Rojo Municipio 17 kmSabana Grande Municipio 18 kmSan Germán Municipio 18 kmHormigueros Municipio 23 kmYauco Municipio 24 kmGuayanilla Municipio 26 kmMaricao Municipio 27 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.8 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 3 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2651 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 17.9486, -67.0323. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 3 km (2 mi) SSE of here earthquakes near Lajas Municipio
Guánica Municipio, PR 12 km (7 mi) W of here earthquakes near Guánica Municipio
Cabo Rojo Municipio, PR 17 km (10 mi) ESE of here earthquakes near Cabo Rojo Municipio
Sabana Grande Municipio, PR 18 km (11 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 18 km (11 mi) S of here earthquakes near San Germán Municipio
Hormigueros Municipio, PR 23 km (14 mi) SSE of here earthquakes near Hormigueros Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

48 earthquakes have been recorded within 50 km since this one.

  1. 1.6 5 km ENE of Sabana Grande, Puerto Rico
  2. 1.9 4 km S of Tallaboa, Puerto Rico
  3. 1.7 4 km WSW of Liborio Negron Torres, Puerto Rico
  4. 1.8 1 km ESE of Stella, Puerto Rico
  5. 2.0 43 km S of Pole Ojea, Puerto Rico
  6. 2.0 6 km NNE of Sabana Eneas, Puerto Rico
  7. 2.3 3 km ENE of Espino, Puerto Rico
  8. 1.9 8 km N of Yauco, Puerto Rico
  9. 1.5 22 km W of Pole Ojea, Puerto Rico
  10. 1.7 4 km WSW of Ponce, Puerto Rico
  11. 2.1 2 km E of Mayagüez, Puerto Rico
  12. 1.7 5 km NNE of Sabana Grande, Puerto Rico
  13. 1.8 4 km SSW of Añasco, Puerto Rico
  14. 1.9 6 km NW of Adjuntas, Puerto Rico
  15. 1.6 5 km NNE of Sabana Grande, Puerto Rico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.